/* Root tokens and reset */
*,
*::before,
*::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --metro-purple: #512d6d;
    --metro-purple-deep: #3c1f56;
    --tmobile-magenta: #e20074;
    --tmobile-magenta-deep: #b8005a;
    --gradient-hero: linear-gradient(135deg, rgba(81, 45, 109, 0.95) 0%, rgba(226, 0, 116, 0.92) 100%);
    --gradient-button: linear-gradient(135deg, #512d6d 0%, #e20074 100%);
    --gradient-button-hover: linear-gradient(135deg, #5b2f88 0%, #ff0f8d 100%);
    --transition-speed: 0.3s;
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
}

html[data-theme="light"] {
    --bg-color: #f5f1ff;
    --bg-muted: #fdfbff;
    --surface-color: rgba(255, 255, 255, 0.95);
    --surface-elevated: #ffffff;
    --text-color: #24103d;
    --text-muted: #5d4d79;
    --border-color: rgba(81, 45, 109, 0.16);
    --border-strong: rgba(81, 45, 109, 0.28);
    --shadow-soft: 0 30px 120px -80px rgba(81, 45, 109, 0.55);
    --shadow-hero: 0 40px 120px -80px rgba(226, 0, 116, 0.65);
    --input-bg: rgba(255, 255, 255, 0.9);
    --input-border: rgba(81, 45, 109, 0.18);
    --input-placeholder: rgba(36, 16, 61, 0.45);
    --focus-ring: rgba(226, 0, 116, 0.35);
    --header-pill-bg-primary: linear-gradient(135deg, rgba(255, 255, 255, 0.25) 0%, rgba(255, 255, 255, 0.08) 100%);
    --header-pill-border-primary: rgba(255, 255, 255, 0.6);
    --header-pill-text-primary: #ffffff;
    --header-pill-bg-secondary: rgba(255, 255, 255, 0.16);
    --header-pill-border-secondary: rgba(255, 255, 255, 0.4);
    --header-pill-text-secondary: #f7efff;
    --footer-border: rgba(81, 45, 109, 0.18);
    --toggle-bg: rgba(255, 255, 255, 0.18);
    --toggle-text: #ffffff;
    --toggle-border: rgba(255, 255, 255, 0.4);
    --glow-opacity: 0.75;
    --modal-overlay: rgba(9, 2, 19, 0.45);
    color-scheme: light;
}

html[data-theme="dark"] {
    --bg-color: #080111;
    --bg-muted: #110425;
    --surface-color: rgba(26, 15, 44, 0.85);
    --surface-elevated: rgba(30, 18, 52, 0.92);
    --text-color: #f5efff;
    --text-muted: #d7cbf4;
    --border-color: rgba(215, 203, 244, 0.16);
    --border-strong: rgba(215, 203, 244, 0.28);
    --shadow-soft: 0 40px 140px -80px rgba(0, 0, 0, 0.85);
    --shadow-hero: 0 40px 120px -70px rgba(226, 0, 116, 0.6);
    --input-bg: rgba(18, 8, 31, 0.92);
    --input-border: rgba(215, 203, 244, 0.22);
    --input-placeholder: rgba(245, 239, 255, 0.38);
    --focus-ring: rgba(226, 0, 116, 0.55);
    --header-pill-bg-primary: linear-gradient(135deg, rgba(255, 255, 255, 0.26) 0%, rgba(255, 255, 255, 0.08) 100%);
    --header-pill-border-primary: rgba(255, 255, 255, 0.38);
    --header-pill-text-primary: #ffffff;
    --header-pill-bg-secondary: rgba(255, 255, 255, 0.14);
    --header-pill-border-secondary: rgba(255, 255, 255, 0.24);
    --header-pill-text-secondary: #f3e9ff;
    --footer-border: rgba(215, 203, 244, 0.16);
    --toggle-bg: rgba(255, 255, 255, 0.16);
    --toggle-text: #ffe6f3;
    --toggle-border: rgba(255, 255, 255, 0.32);
    --glow-opacity: 1;
    --modal-overlay: rgba(3, 0, 8, 0.65);
    color-scheme: dark;
}

body {
    font-family: var(--font-family);
    line-height: 1.6;
    font-size: 16px;
    background: var(--bg-color);
    color: var(--text-color);
    min-height: 100vh;
    padding: 56px 24px 64px;
    transition: background var(--transition-speed) ease, color var(--transition-speed) ease;
    position: relative;
    overflow-x: hidden;
}

body::before,
body::after {
    content: "";
    position: fixed;
    width: 520px;
    height: 520px;
    border-radius: 50%;
    z-index: -2;
    pointer-events: none;
    filter: blur(20px);
}

body::before {
    top: -200px;
    right: -140px;
    background: radial-gradient(circle at center, rgba(226, 0, 116, 0.45) 0%, rgba(81, 45, 109, 0.15) 55%, transparent 80%);
    opacity: var(--glow-opacity);
}

body::after {
    bottom: -240px;
    left: -160px;
    background: radial-gradient(circle at center, rgba(81, 45, 109, 0.38) 0%, rgba(19, 8, 35, 0.2) 55%, transparent 85%);
    opacity: calc(var(--glow-opacity) * 0.85);
}

a {
    color: inherit;
    text-decoration: none;
    transition: color var(--transition-speed) ease;
}

button {
    font: inherit;
    border: none;
    background: none;
    cursor: pointer;
    color: inherit;
    transition: transform 0.2s ease, box-shadow var(--transition-speed) ease, background var(--transition-speed) ease;
}

.container {
    max-width: 1100px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
}

.header {
    background: var(--gradient-hero);
    border-radius: 28px;
    padding: 36px 40px;
    color: #ffffff;
    box-shadow: var(--shadow-hero);
    border: 1px solid rgba(255, 255, 255, 0.08);
    margin-bottom: 36px;
    position: relative;
    overflow: hidden;
}

.header::after {
    content: "";
    position: absolute;
    top: -90px;
    right: -70px;
    width: 260px;
    height: 260px;
    background: radial-gradient(circle at center, rgba(255, 255, 255, 0.22) 0%, transparent 70%);
    opacity: 0.6;
    pointer-events: none;
}

.header-top {
    display: flex;
    justify-content: flex-end;
    margin-bottom: 24px;
    position: relative;
    z-index: 1;
}

.theme-toggle {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 10px 18px;
    border-radius: 999px;
    background: var(--toggle-bg);
    border: 1px solid var(--toggle-border);
    color: var(--toggle-text);
    font-size: 0.85rem;
    font-weight: 600;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    backdrop-filter: blur(6px);
    position: relative;
    z-index: 2;
    pointer-events: auto;
}

.theme-toggle *,
.theme-toggle *::before,
.theme-toggle *::after {
    pointer-events: none;
}

.theme-toggle:hover {
    transform: translateY(-2px);
}

.theme-toggle:focus-visible {
    outline: none;
    box-shadow: 0 0 0 3px rgba(255, 255, 255, 0.35);
}

.theme-toggle__icon {
    font-size: 1.1rem;
}

.header-content {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 16px;
}

.header-content h1 {
    font-size: 2.5rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    margin: 0;
}

.subtitle {
    font-size: 1.05rem;
    font-weight: 500;
    line-height: 1.6;
    opacity: 0.92;
    margin: 0;
}

.header-pill {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 999px;
    padding: 16px 30px;
    border: 1px solid var(--header-pill-border-secondary);
    background: var(--header-pill-bg-secondary);
    color: var(--header-pill-text-secondary);
    box-shadow: 0 18px 42px -24px rgba(0, 0, 0, 0.45);
    backdrop-filter: blur(12px);
}

.header-pill--primary {
    background: var(--header-pill-bg-primary);
    border-color: var(--header-pill-border-primary);
    color: var(--header-pill-text-primary);
    padding: 20px 42px;
}

.header-pill--secondary {
    padding: 14px 28px;
}

.main {
    position: relative;
}

.form-container {
    background: var(--surface-elevated);
    border-radius: 28px;
    padding: 48px 52px;
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-soft);
    backdrop-filter: blur(18px);
}

.form-container h2 {
    font-size: 2.1rem;
    font-weight: 600;
    text-align: center;
    margin-bottom: 12px;
}

.form-description {
    text-align: center;
    color: var(--text-muted);
    margin-bottom: 40px;
    font-size: 1.05rem;
}

.form-section {
    margin-bottom: 44px;
    padding-bottom: 32px;
    border-bottom: 1px solid var(--border-color);
}

.form-section:last-of-type {
    border-bottom: none;
    margin-bottom: 0;
    padding-bottom: 0;
}

.form-section h3 {
    font-size: 1.35rem;
    font-weight: 600;
    color: var(--text-color);
    margin-bottom: 28px;
    padding-bottom: 10px;
    display: inline-flex;
    border-bottom: 3px solid rgba(226, 0, 116, 0.6);
    letter-spacing: -0.01em;
}

.form-group {
    margin-bottom: 24px;
}

.form-row {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 24px;
}

.form-group label {
    display: block;
    margin-bottom: 10px;
    font-weight: 600;
    font-size: 0.95rem;
    color: var(--text-muted);
}

.form-group input[type="text"],
.form-group input[type="email"],
.form-group input[type="tel"],
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 15px 18px;
    border-radius: 14px;
    border: 1px solid var(--input-border);
    background-color: var(--input-bg);
    color: var(--text-color);
    font-size: 1rem;
    transition: border var(--transition-speed) ease, box-shadow var(--transition-speed) ease, background var(--transition-speed) ease;
    appearance: none;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--input-placeholder);
}

.form-group input:focus-visible,
.form-group select:focus-visible,
.form-group textarea:focus-visible {
    outline: none;
    border-color: var(--tmobile-magenta);
    box-shadow: 0 0 0 4px var(--focus-ring);
}

.form-group input:hover,
.form-group select:hover,
.form-group textarea:hover {
    border-color: var(--border-strong);
}

.form-group textarea {
    resize: vertical;
    min-height: 140px;
    line-height: 1.6;
}

.form-group select {
    color: var(--text-color);
    background-image: linear-gradient(45deg, transparent 50%, currentColor 50%), linear-gradient(135deg, currentColor 50%, transparent 50%);
    background-position: calc(100% - 26px) calc(50% - 5px), calc(100% - 19px) calc(50% - 5px);
    background-size: 8px 8px;
    background-repeat: no-repeat;
    padding-right: 60px;
}

.form-group select:disabled {
    cursor: not-allowed;
    opacity: 0.6;
    background-image: none;
}

.checkbox-group {
    margin-top: 30px;
}

.checkbox-label {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    font-size: 0.95rem;
    color: var(--text-muted);
}

.checkbox-label input[type="checkbox"] {
    width: auto;
    margin-top: 4px;
    transform: scale(1.2);
    accent-color: var(--tmobile-magenta);
}

.form-actions {
    margin-top: 48px;
    text-align: center;
    padding-top: 32px;
    border-top: 1px solid var(--border-color);
}

.submit-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 18px 48px;
    border-radius: 999px;
    font-size: 1.05rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: #ffffff;
    background: var(--gradient-button);
    box-shadow: 0 18px 45px -18px rgba(226, 0, 116, 0.55);
}

.submit-btn:hover {
    transform: translateY(-2px);
    background: var(--gradient-button-hover);
    box-shadow: 0 22px 55px -20px rgba(226, 0, 116, 0.65);
}

.submit-btn:active {
    transform: translateY(0);
}

.submit-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    box-shadow: none;
}

.submit-btn.loading {
    position: relative;
    color: transparent;
    pointer-events: none;
}

.submit-btn.loading::after {
    content: "";
    position: absolute;
    top: 50%;
    left: 50%;
    width: 22px;
    height: 22px;
    margin: -11px 0 0 -11px;
    border-radius: 50%;
    border: 2px solid rgba(255, 255, 255, 0.4);
    border-top-color: #ffffff;
    animation: buttonSpin 1s linear infinite;
}

@keyframes buttonSpin {
    to {
        transform: rotate(360deg);
    }
}

.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    inset: 0;
    background: var(--modal-overlay);
    backdrop-filter: blur(8px);
    padding: 24px;
}

.modal-content {
    background: var(--surface-elevated);
    border-radius: 24px;
    width: min(520px, 100%);
    margin: 0 auto;
    box-shadow: var(--shadow-soft);
    border: 1px solid var(--border-color);
    overflow: hidden;
    animation: modalSlideIn 0.32s ease;
}

@keyframes modalSlideIn {
    from {
        opacity: 0;
        transform: translateY(24px) scale(0.98);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

.modal-header {
    padding: 28px 32px 22px;
    text-align: center;
    background: var(--gradient-hero);
    color: #ffffff;
}

.modal-header h2 {
    font-size: 1.6rem;
    font-weight: 600;
}

.modal-body {
    padding: 32px;
    color: var(--text-color);
}

.modal-body p {
    margin-bottom: 16px;
    color: var(--text-muted);
}

.modal-body ul {
    margin-left: 20px;
    color: var(--text-muted);
}

.modal-body li {
    margin-bottom: 10px;
}

.modal-actions {
    padding: 0 32px 32px;
    text-align: center;
}

.close-btn {
    padding: 12px 32px;
    border-radius: 999px;
    font-weight: 600;
    background: var(--gradient-button);
    color: #ffffff;
    box-shadow: 0 14px 34px -18px rgba(226, 0, 116, 0.55);
}

.close-btn:hover {
    transform: translateY(-1px);
    background: var(--gradient-button-hover);
    box-shadow: 0 18px 42px -20px rgba(226, 0, 116, 0.65);
}

.close-btn:focus-visible {
    outline: none;
    box-shadow: 0 0 0 3px var(--focus-ring);
}

.footer {
    text-align: center;
    padding: 36px 0 0;
    margin-top: 56px;
    border-top: 1px solid var(--footer-border);
    color: var(--text-muted);
    font-size: 0.95rem;
    display: grid;
    gap: 8px;
}

.footer a {
    color: var(--tmobile-magenta);
    font-weight: 600;
}

.footer a:hover {
    color: var(--tmobile-magenta-deep);
}

@media (max-width: 1024px) {
    .container {
        max-width: 92vw;
    }

    .form-container {
        padding: 40px 44px;
    }
}

@media (max-width: 768px) {
    body {
        padding: 36px 16px 48px;
    }

    .header {
        padding: 32px 28px;
    }

    .header-content h1 {
        font-size: 2.3rem;
    }

    .form-container {
        padding: 36px 24px;
    }

    .form-row {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .theme-toggle {
        width: 100%;
        justify-content: center;
    }
}

@media (max-width: 520px) {
    .header {
        border-radius: 22px;
    }

    .header-content h1 {
        font-size: 2rem;
    }

    .subtitle {
        font-size: 1rem;
    }

    .form-container {
        padding: 28px 20px;
    }

    .submit-btn {
        width: 100%;
    }

    .modal {
        padding: 16px;
    }

    .modal-content {
        border-radius: 18px;
    }
}

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}